Physical Activity Predictors During Postpartum

描述（由申请人提供）：产后是一种特殊事件，通常会导致女性体力活动（PA）减少;从而使这一特殊人群患多种慢性疾病和过早死亡的风险增加。然而，现有的研究在产后检查PA是有限的，关于以下3个重要因素：（a）横断面评估，不捕捉特定的生理和心理需求的早期，中期和晚期产后;（B）非标准化和未经验证的PA措施;（c）非理论研究PA的动机和预测。在产后妇女实施有效的PA干预措施之前，有必要在理论框架内使用PA行为的标准化措施前瞻性地检查她们的PA信念和行为。这种方法将提供理论基础，以实施特定的产后的身体，环境和心理需求的PA干预措施。计划行为理论（Theory of Planned Behavior，TPB）是目前最有影响力和最成功的理论之一，可以作为预测产后6周、3个月和6个月妇女PA信念和行为的理论框架。我们建议的总体目标是：a）确定和检查TPB对产后妇女的预测能力; B）检查产后期间的PA水平（即，每周中等强度PA的分钟数、能量消耗、平均计数/分钟数和PA的天/分钟数，以满足当前PA指南）;以及c）如TPB所指导的，评估PA行为的基于理论的人口统计学、生活质量和环境调节因子。本研究的结果将被用于设计一个以理论为基础的随机临床试验，以增加和维持产后妇女的PA。 公共卫生相关性：在产后妇女实施有效的PA干预措施之前，有必要在理论框架内使用PA行为的标准化措施前瞻性地检查她们的PA信念和行为。这种方法将提供理论基础，以实施特定的产后的身体，环境和心理需求的PA干预措施。在计划行为理论的指导下，我们将前瞻性地确定PA的信念和行为（即，加速度计和自我报告）的妇女在产后6周，3个月和6个月，和变量，调节理论的计划行为和PA的关系。

DESCRIPTION (provided by applicant): Postpartum is a specific event that often results in decreased physical activity (PA) for women; thereby placing this special population at increased risk for several chronic diseases and premature mortality. The existing research examining PA during postpartum is limited, however, with respect to the following 3 important factors: (a) cross-sectional assessments that do not capture the specific physical and psychological demands of early, middle, and late postpartum; (b) nonstandardized and unvalidated PA measures; and (c) nontheoretical studies of PA motivators and predictors. Before effective PA interventions are implemented with postpartum women, it is necessary to prospectively examine their PA beliefs and behaviors using standardized measures of PA behavior within a theoretical framework. This approach will provide the theoretical basis to implement PA interventions specific to the physical, environmental, and psychological demands of postpartum. The theory of planned behavior (TPB) is one of the most influential and successful theories for understanding and predicting PA intention and behavior, and will serve as the theoretical framework to prospectively determine the PA beliefs and behaviors for women at 6 weeks, 3 months, and 6 months postpartum. The overall objectives of our proposal are to: a) determine and examine the predictive ability of the TPB for postpartum women; b) examine PA levels during postpartum (i.e., min of moderate-strenuous PA per week, energy expenditure, mean counts/min, and days/min of PA to meet current PA guidelines); and c) evaluate theory-based demographic, quality of life, and environmental moderators of PA behaviors, as guided by the TPB. The results from this proposal will be used to design a theory-based randomized clinical trial to increase and maintain PA of postpartum women. PUBLIC HEALTH RELEVANCE: Before effective PA interventions are implemented with postpartum women, it is necessary to prospectively examine their PA beliefs and behaviors using standardized measures of PA behavior within a theoretical framework. This approach will provide the theoretical basis to implement PA interventions specific to the physical, environmental, and psychological demands of postpartum. Guided by the theory of planned behavior we will prospectively determine the PA beliefs and behaviors (i.e., accelerometers and self-report) for women at 6 weeks, 3 months, and 6 months postpartum, and variables that moderate the theory of planned behavior and PA relationship.